Selecting the right engine oil is one of the key maintenance procedures for your vehicle. Properly chosen oil affects not only the stability of engine operation, but also its service life, fuel efficiency, resistance to wear, and overheating. Modern technologies place increased demands on lubricants, making it important to consider multiple factors when choosing engine oil. This article highlights the basic criteria for oil selection.
Main Criteria for Choosing Motor Oil
Viscosity Grade
One of the primary parameters is oil viscosity, defined by the SAE (Society of Automotive Engineers) standard. For example, the 5W-30 marking indicates that the oil retains good fluidity at low temperatures while providing sufficient viscosity at high temperatures. Viscosity affects cold starts, oil film formation, fuel consumption, and component wear.

Base Type: Synthetic, Semi-Synthetic, Mineral
Oils are divided into three main groups:
- Synthetic oils – fully engineered blends with enhanced performance features.
- Semi-synthetic oils – a compromise between synthetic and mineral bases.
- Mineral oils – basic oils with minimum purification.
The choice depends on operating conditions, engine age, and manufacturer recommendations.
Practical Tips for Selection
- Check your vehicle manufacturer’s recommendations.
- Consider the climate of your operating region.
- Do not switch from synthetic to mineral oil unless absolutely necessary.
- Monitor both oil change intervals and oil level.
A smart choice of motor oil is the foundation for long-lasting and efficient engine operation. Pexol products meet a wide range of operational needs and comply with current quality standards. Choosing oil based on viscosity, base type, and approvals allows you to achieve optimal results in vehicle maintenance.